Crushing machine



Apr." 10, 1923; -1',451,149 G. H FRASER I CRUSHING MACHI NE Original Filed Dec, 51, 1907 INVENTORI' 7.

Patented Apr. til, 392% entree stares GEORGE HOLT FRASER, OF BROOKLYN, NEW YORK.

CRUSHING MACHINE.

Original application filed December 31 1907, Serial No. 408,773. Renewed June 1916, Serial 110,

103,341. 1922. Serial No. 568,237.

three crushlng rolls, in which type of machine the material is crushed between the inner face of the ring and the outer faces I of therolls, which press outwardly against ing the ringand the remaining rolls by traction.

the ring. Springs are usually employed to press the rolls outwardly, and the rolls are usually mounted on transverse shafts, to one of which driving power is applied for rotat- The roll shafts are carried in bearings which are usually connected around the exterior of the ring and are movable in direc tions radially of the ring.

The invention aims to provide certain improvements especially applicable to mills of this general type.

The preferred shown in the accompanying drawings, in which,

Fig. 1 is a side elevation partly in' section on the planes of the lines 1'1 in Fig. 2;

Fig. 2 is a fragmentary plane view partly broken out and partly inv section approximately on the planes of the lines 2-2 in Fig. 1;

Fig. 3 is a face view of the dust guard, and

Fig. 4 is a fragmentary section showing the dust guard in section on the-lines 4-4l in Fig. 3. r

The crushing ring is lettered a, the crushing rolls 6 6, their shafts c 0, their pressure spring at cl, and the adjusting screws there fore e e. A is the casing, B are the side covers, (1 are the bearing frames, and D their caps. 00 is the feed inlet.

The casing A encloses the ring and rolls.

ings,

form of the invention is Divided and this application filed February 2, 1917, Serial No. 1 16320. Renewedl l'une 14,

Three rolls are shown, one at the top pref-- erably yield in-gly supportingthe ring, and the other two equallydisposed within'the rarest or -s ce.

ring.' The inner face of the ring is concave and fits the outer convex face of eachroll. The rolls are pressed. outwardly against the inner. face of the ring by the springs d, and this pressure'is adjusted byscrews e. The pressure of the springs is transmitted to the bearing frames C, and by them to the shafts of the rolls. The ring and rolls are revolved by driving one or more of the rolls, or the ring, the'motion of the driven part 'bein transmitted to the others by traction. Pre

erably the top shaft 0 is used as the driving shaft for drivingthe top roll, which then drives the ring, which in turn drives the lower rolls.

Preferably all the rolls are movable radially of the ring, and the ring is movable radially of the rolls, so that the parts are free to yield to vibration or to adaptthemselves to the work between their crushing faces. Thus the ringis a revolving annular. die )which receives on its inner vface the rock to be crushed, and the rolls are revolving crushing rolls which crush the rock against the inner face of the ring.

The bearing frames C are preferably sectionalized, anda'ccording to one feature ofthe preferred form of my present improvements are composed of a plurality of rela tively movable members T and U affording U-shaped frames which pass around the outer side of the ring, preferably exterior to the casing, to, connect the opposite bearings to hold them in line, while permitting the roll andlshaft to move radially of the ring,

and also laterally r axially. Each of the lower bearing frames is preferably formed 7 i with an integral ear which is hungtothe.

casing at 7, preferably ,abovethe'rollsby' a swinging suspension link V, so that the frame can swing inwardly and outwardly with the radial movement of the rolls.

Each of the bearing frames is preferably it formed with a hinged cap D connected to it by a single bolt 9 at each side of thebearing, these bolts being preferably parallel with the-shafts, so that when the bolts traverse the ears h on the framesand i on the caps, there is no possibility of thecaps being displaced relatively tothe frames in direction radially of the shafts when the parts are assembled, as would be the case'if the bolts were disposed at right angles to they der end thrust of the shaft.

Each frame is preferably made with a thrust face is definitely located relative to the thrust member j, and has a bearing'socket Z which is preferably bored cylindrically,

' but may be bored as a segment of a sphere.

i In this socket is shown a bearing member H, which has a spherical or partially spherical external portion fitting the socket Z, so that the bearing member can oscillate therein after the manner of a universal joint to I adapt itself to the shaft. The member H may be a tubular casting, but I prefer to form it in halves. It may be of bearing metal and constitute itself the antifriction bushing for the shaft, but I prefer to form .it with a cylindrical bore m and toinsert two removable seml-cylindrical sleeves or bushings of Babbitt metal a within it for carrying the shaft. The upper half 0 of the member His formed with an oil well 32 and the lower half 9 is formed with a shoulder a", and both halves when bored are finished on a line with this shoulder, which engages the end 70 of the frame C, and limits the inward positionof the member H. The outer ,face of this member is formed with a thrust face s for the thrust collar 6 of the shaft.

A dust guard I preferably surrounds. the shaft at the inner-end of each bearing, and hasa tubular projection J, preferably round or formed as a segment of a sphere on its outer side, which fits into the bore of the -member H and is supported thereby so that the dust guard can slide axially of the member, and may cant. in its support as the frame rocks. Springs K fit within and without the dust guard and react against the bearing member, serving to keep the dust guard pressed against the side of the casing to close the shaft slot thereof. The dust guard shown has enlarged or oval apertures L through it for passing over the shaft with sufficient clearance to permit travel of the latter as it wearsinto the bushings, and has an outer wall M adjacent to the bearing, and

. a chamber N between its two walls. In this chamber are movable or sliding members sustained slidingly on the shaft, which are preferably two sliding plates 8 kept apart by aspring or bar t. The plates sihave bores fitting the shaft and are free to float with the movements of the shaft relatively to the dust guard. They are pressed against the opposite faces of the guard and close the clearance openings thereth'rough from the casing on one side and the bearing onthe other side. They are so thin and slight that they are practically passive members adapting themselves to the shaft, and do not exert suflicient pressure thereon to groove the' stops or faces on the bearing or frame to prevent the dust guard from rotating, as best seen in Figs. 3 and 4;.

The casing is preferably divided horizontally and vertic-ally'through its middle in the plane of the axis of the die into upper and lower sections and into front and rear sections and vertically in the plane of the lateral center of the .rolls into right hand and left hand sections so that the frame v proper of 'the' casing comprises eight separably connected removable parts or, seg ments, the front ones being lettered F F F and 1 respectively, and the rear ones being lettered G G G and G respectively, which are removably connected together forwardly and rearwardly by horizontal bolts :12 traversing ears 2 on the base or lower sections, and e on the top or upper sections, and sideways byhorizontal bolts and vertically by vertical bolts'u', as shown in Figs. 1 and 2, and these sections are preferably each formed with an integral side wall to on each side having an arc-shaped inner edge which when the members are assembled affords an enlarged opening 2 on the opposite sides, which openings are closed by the covers B to afford va crushing chamber for the ring and rolls.

The preferred form of my invention is.

ized machines, in which each movable nonrotative bearing member or frame 0 comprises a spring actuated or pressed member or yoke T which is pivotally movably mounted and preferably hinged: 'or' fulcrumed to the casing, and preferably pivotally movably and removably mounted non-rotative bearing means on which the rolls are rotatably mounted, and which are preferably hinged to and swing from the yoke T at each side of the casing, as the bearing frames U which are held guided positioned or supported by links V, the pivoted endsof the frames being widened if desired to bear against the sides of the rockenemas mg yokes to give any desired rigidity of the frame axially of the shafts. In this construction two thrust rollers j will be supplied for each frame U, so that the latter may rock relatively to the shaft until these rollers strike the casing. In this construc tion the spring seat '2; extends within the spring to bring the adjusting screw as near as possible to the casing to diminish the rocking action of the spring during movement of the rocker T, and the pressure spring (Z is opposite and actuates the spring pressed member T and reacts on the casing, and the stress of the spring is transmitted by the member T to the movable non-rotative means U which are shown as tension members, swingingly connected to the'yoke T so that they can move relatively thereto to follow the radial movement of the roll mounted on them while transmitting the stress of the spring acting to hold the roll outwardly to resist a crushing pressure from the inner face of the die.

Preferably the members T are hinged to the casing on horizontal axes parallel with and outwardly of the axes of the rolls by pivotal pins 7, which as shown are 'respectively above the upper roll and laterally of its pressure spring and below the lower rolls and beneath their pressure springs, but they may be otherwise disposed as desired.

As shown the non-rotative means U are pivotally mounted on the rockers T on axes outwardly of and parallel with the axes of their rolls, and above the upper roll and below the lower rolls respectively, by pivotal pins f parallel with the axles or shafts 0 and spaced at each side of the pressure springs and outwardly of the casing, but they may be otherwise disposed if desired. With the arrangement shown any bearing member U mav be removed axially of its shaft by withdrawing its hinge pin f and swinging its outer end clear of the yoke, whereupon after removing the thrust collar t and disconnecting the link V the bearing member U may be slid axially off the end of the shaft for any purpose and in reverse manner it may be placed again in position.

By this modification, the parts may be made extremely light, so that they can be adapted for packing or mule-back transportation.

The roll I) is of improved construction,

' preferably consisting of a soft iron hub X bored to fit the roll seat on the shaft 0, and held against the shoulder on this shaft by the flanged roll collar Y, which embraces the outside of this shoulder and projects into recesses in the roll, andis connected thereto by bolts traversing it and the roll to hold the roll on the seat, which hub has an external finished face and shoulder, on which face is forced a shell or tire Wo f hard material, preferably tempered steel,

which is shaped to seat on and fit the hub and is riveted on the hub by swaging over the latter or otherwise to prevent loosening. It may be notched or key-seated, and the hub may be swaged into the notches, or may.

carry a key to ensure against the tire turn ing on the hub, butas it is applied to the hub under great pressure, this may not be.

necessary in some cases, and I prefer to rely on a tight fit between the cylindrical faces of the hub and tire, and leave an integral thrust shoulder at one end of the hub, and to swage the hub against the tire at the other end for securing the parts,- or use a clamp.

Shaft slots 0, as shown in Fig. 1 are formed in the casing or cover preferablyby pro-- viding them in the removable covers 13.

The wall of the casingand the opposite wall of the cover are machined to receive wear pieces P which prevent the ring'fron'r coming in contact with the casing.

In operation, the feed is directed onto the revolving ring, being crushed between the ring and rolls and discharged through the bottom of the casing.

In case the bearing line or oscillate, the bearing members rock in the frames and vpreserve parallelism with i the shaft. The dustguards slide in the bearing members during motion of the latter. The weight of the suspended lower bearing frames is so nearly balanced that the springs determine the crushing pressure irrespective of the weight of the yokes. The sections of the frame or casing can be shipped separately and individually, or partially assembled as conveniences dictate, and these can be removed individually or as a group. If desired the front sections can be withdrawn from the rear sections upon releasing their connecting bolts 00 and the cover screws and the pins 9 of the front bearing caps D, so that the front section and bearingframe can be withdrawn from or applied to remainingparts without otherwise disturbing these.

The rolls will'move inwardly and outwardly toward and from each other to adapt themsleves to the material being crushed on the inner face of the ring, against which face these will be pressed by the pressure springs. The bearing frame will be swingingly sustained or positioned by the links V andthe removable yokes T on which they are pivotally mounted, and these yokes can be disconnected and separately moved back to replace a pressure spring.

It will be seen that my invention provides improvements which can be readily and advantageously availed of, and it will frames are out of r be understood that the invention is not limited to the particular details of construction, arrangement and combination of parts set forth as constituting-its preferredform,

- since it can be employed in whole or in part according to such modifications as circu in stances or the udgment of those skilled in the art may dictate, without departing from the spirit of the invention.

The end bearing member may be faced off at right angles to its bore, and a ball or roller may be carried by the dust guard, or the dust guard may be correspondingly faced off, so that the end of the bearing member may strike against the ball or roller, or against the dust guard to limit end thrust.

What I claim is: V

1. In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable androtatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a movable member movably mounted on said casing, non-rotative movable means on which said roll isrotatablymounted andmovably mounted on and held outwardly by said movable member, and pressing means opposite and reacting on said movable member and said casing for holding said non-rotative means outwardly to hold said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom.

2. In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having peripheral" crushing face reciprocal to the inner face of said die, means for revolvingone of said parts, a casing supporting said parts, a movable member -movably mounted on said casing, non-rotative movable means on which said roll is rotatably mounted and piv-' otally mounted on and held outwardly by said movable member. and pressing means acting on said movable member and reacting on said casing for holding said nonrotative means outwardly to hold said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom.

8. In combination, an annular die revolv ing in an approximately vertical plane and having an internal crushing face, a movable and rotatable, crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a .movable member movably mounted on said casing, non-rotative movable means on which said roll is rotatably mounted and pivneeies outwardly to hold said roll outwardlyt'o ward the inner face of said die to res1st a crushing pressure therefrom.

4; In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a movable member movably mounted on said casing, no'n-rotative movable means on which said roll is rotatably mounted and mov ably connected to said movable member outfin wardly of the axis of said roll, and pressing means for holding said roll outwardly toward the inner face of said die to reslst a crushing pressure therefrom opposite and reacting on said movable member.

5. In combination, an annular die-revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and ec centric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving'one of said parts, a casing supporting said parts, a movable member pivotally mounted on said casing, a non-rotative movable means on which said roll is rotatably mounted and movably mounted on and held outwardly by said. movable member, and ressing means acting on said movable mom or and reacting on said casing for holding said non-rotative means outwardly to hold said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom.

6. In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and cocentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means forv revolving one of said parts, a casing supporting said parts, a movable member pivotally mounted on a horizontal axis on said casing, non-rotative movable means on which said roll is rotatably mounted and movably mounted on said movable member, and pressing means for holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom oppositeand acting on said movable member and reacting on said abl member ,pivotally mounted on said casing on an axis above the aXis of said roll, non-rotative movable means on which said roll is rotatably mounted and movably mounted on said movable member, and pressing means for holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom reactj ing on said movable member.

8. In combination, an annular die revolving in an approximately vertical plane'and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a movable member pivotally mounted on said casing,non-rotative movable means on which said roll is rotatably mounted and swingingly connected to said movable member at apoint outwardly of the axis of said roll, and pressing means for holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom reacting on said movable member.

9. In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocalto the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a pressure sustaining member pivotally mounted on said casing, non-rotative movable means on which said roll is rotatably mounted and m0v ably connected to and held outwardly by said member, pressing means for holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom reacting on said member, and tensioning means opposite and for varying the tensionof said pressing means.

10.. In combination, an annular die revolving in an approximatelyvertical plane and having an internal crushing face, a movable and rotatable crushing roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a movable pressure sustaining member movably mounted on said casing, non-rotative movable means on which said roll is rotatably mounted movably connected to said movable member, pressing means for holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom reacting on said movable member, and adjusting means opposite for adjusting said pressing means relatively to said movable member.

11. In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable and rotatable roll within and eccentric of said die and having a peripheral crushing facereciprocal to the inner face of said die, means for revolving one of said parts, a casing supporting said parts, a movable spring actuated member mounted on and movable-relatively to said casing, a spring carried by said casing and opposite and acting on said member to resist movement thereof, non-rotative movable means on which said roll is rotatably mounted movable relatively to said member, and means aflording a rocking connection between said non-rotative means and-said member movably holding the former from the latterfor holding said roll outwardly toward the inner face of said die to resist a crushing pressure therefrom. i

12. In combination, an annular die revolving in an approximately vertical plane and having an internal crushing face, a movable' and rotatable roll within and eccentric of said die and having a peripheral crushing face reciprocal to the inner face of said die, means for revolving-one of said parts, a

casing supporting said parts, a movable spring pressed member mounted on and movable relatively to said casing, a spring carried-by said casing and opposite and acting on said member to resist movement thereof, non-rotative movable hinged means on which said roll is rotatably mounted and movable relatively to said member, and means affording a movable connection between said non-rotative -means and said member for resisting the stress of said roll loo 4 i and holding said roll outwardly against the inner face of said die to resist a crushing pressure therefrom. v

In witness whereof, I have hereunto signed my name in the presence of two subscribing witnesses. v -GEORGE HOLT FRASER.

Witnesses: v CHARLES. E. DONNELLY,

- EDMUND J. FENN. 

